What do you think about tiny fishing?

Recently, my friends often play an interesting game called tiny fishing . You will become a fisherman and sit on a boat. This boat will not move and you can fish in the sea. Your hook can reach the deepest parts of the ocean.
At the bottom of the sea, you can see different types of fish. You can sell them for money. Different types of fish will sell for different prices. The rarest fish are the goldfish. Can you hook these fish?